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- /*
- File: ImplementationError.java
-
- Originally written by Doug Lea and released into the public domain.
- Thanks for the assistance and support of Sun Microsystems Labs, Agorics
- Inc, Loral, and everyone contributing, testing, and using this code.
-
- History:
- Date Who What
- 24Sep95 dl@cs.oswego.edu Create from collections.java working file
-
- */
-
- package collections;
-
- /**
- * ImplementationError is thrown by
- * ImplementationCheckable.checkImplementation upon failure
- * to verify internal representation constraints.
- *
- * @author Doug Lea
- * @version 0.93
- *
- * <P> For an introduction to this package see <A HREF="index.html"> Overview </A>.
- *
- **/
-
- public class ImplementationError extends Error {
-
- /**
- * The object failing the ImplementationCheck
- **/
-
- public Object failedObject;
-
- public ImplementationError() { super(); }
-
- public ImplementationError(String msg, Object v) {
- super(msg); failedObject = v;
- }
-
- /**
- * Assertion checking utility.
- * Throws Implementation error if pred is false.
- * @param obj -- the object making the assertion
- * @param pred -- the assertion
- **/
- public static void assert(Object obj, boolean pred)
- throws ImplementationError {
- if (!pred) throw new ImplementationError("Assertion failure", obj);
- }
-
- }
-
-